Retsch MM 500 Vario, Manual

Page: 42 / 87

Operating the Device
42
This approach is regulated in the EU under Articles 118 and 118a of EC Directive 89/391/EEC.
Account must be taken of corresponding provisions in other countries outside the EU.
6.5 Preparing the grinding jar
NOTICE
N15.0011
Wear or damage to the grinding balls and grinding jars
Use of different materials
−
Greater wear or damage is possible when operating the device with
grinding balls and grinding jars whose individual components are made of
different materials.
•
Only use grinding balls and grinding jars made of the same material.
NOTICE
N16.0000
Damage to the grinding jars
Incorrect filling of the grinding jars
−
If the grinding jar is filled with too little material, the grinding balls will
damage the grinding bowl.
•
The filling in the grinding jars must not be less than 25 % of the
grinding jar volume.
6.5.1 Opening the grinding jar
CAUTION
C9.0024
Risks of burns and scalding
Hot grinding jar and/or sample material
−
The sample material and grinding jar can get very hot during the grinding
process.
•
After grinding, always wear protective gloves when handling the
grinding jar.
•
Never open hot grinding jars!
•
Allow grinding jars to cool down to room temperature before
opening them.